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authorAndrey Andreev <narf@bofh.bg>2012-10-05 21:45:41 +0200
committerAndrey Andreev <narf@bofh.bg>2012-10-05 21:45:41 +0200
commit5b5021812ea6dc859312e00b6b0f078eea54c88d (patch)
tree0a8840ee0429cc405cb597438a73d03bca970c1a /system/database/drivers/sqlite/sqlite_driver.php
parent49d08053257b55db511eaca08b8ab5d12149f3b6 (diff)
parentdbad54e09a39a77c7404dee9ca1a6b34299469d0 (diff)
Merge upstream branch
Diffstat (limited to 'system/database/drivers/sqlite/sqlite_driver.php')
-rw-r--r--system/database/drivers/sqlite/sqlite_driver.php131
1 files changed, 16 insertions, 115 deletions
diff --git a/system/database/drivers/sqlite/sqlite_driver.php b/system/database/drivers/sqlite/sqlite_driver.php
index 551704f83..2744a63cf 100644
--- a/system/database/drivers/sqlite/sqlite_driver.php
+++ b/system/database/drivers/sqlite/sqlite_driver.php
@@ -43,18 +43,8 @@ class CI_DB_sqlite_driver extends CI_DB {
public $dbdriver = 'sqlite';
// The character used to escape with - not needed for SQLite
- protected $_escape_char = '';
+ protected $_escape_char = '"';
- // clause and character used for LIKE escape sequences
- protected $_like_escape_str = " ESCAPE '%s' ";
- protected $_like_escape_chr = '!';
-
- /**
- * The syntax to count rows is slightly different across different
- * database engines, so this string appears in each driver and is
- * used for the count_all() and count_all_results() functions.
- */
- protected $_count_string = 'SELECT COUNT(*) AS ';
protected $_random_keyword = ' Random()'; // database specific random keyword
/**
@@ -127,7 +117,9 @@ class CI_DB_sqlite_driver extends CI_DB {
*/
protected function _execute($sql)
{
- return @sqlite_query($this->conn_id, $sql);
+ return $this->is_write_type($sql)
+ ? @sqlite_exec($this->conn_id, $sql)
+ : @sqlite_query($this->conn_id, $sql);
}
// --------------------------------------------------------------------
@@ -139,13 +131,8 @@ class CI_DB_sqlite_driver extends CI_DB {
*/
public function trans_begin($test_mode = FALSE)
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
{
return TRUE;
}
@@ -153,7 +140,7 @@ class CI_DB_sqlite_driver extends CI_DB {
// Reset the transaction failure flag.
// If the $test_mode flag is set to TRUE transactions will be rolled back
// even if the queries produce a successful result.
- $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+ $this->_trans_failure = ($test_mode === TRUE);
$this->simple_query('BEGIN TRANSACTION');
return TRUE;
@@ -168,13 +155,8 @@ class CI_DB_sqlite_driver extends CI_DB {
*/
public function trans_commit()
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
{
return TRUE;
}
@@ -192,13 +174,8 @@ class CI_DB_sqlite_driver extends CI_DB {
*/
public function trans_rollback()
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
{
return TRUE;
}
@@ -268,35 +245,6 @@ class CI_DB_sqlite_driver extends CI_DB {
// --------------------------------------------------------------------
/**
- * "Count All" query
- *
- * Generates a platform-specific query string that counts all records in
- * the specified database
- *
- * @param string
- * @return string
- */
- public function count_all($table = '')
- {
- if ($table == '')
- {
- return 0;
- }
-
- $query = $this->query($this->_count_string.$this->protect_identifiers('numrows').' FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE));
- if ($query->num_rows() == 0)
- {
- return 0;
- }
-
- $row = $query->row();
- $this->_reset_select();
- return (int) $row->numrows;
- }
-
- // --------------------------------------------------------------------
-
- /**
* List table query
*
* Generates a platform-specific query string so that the table names can be fetched
@@ -306,12 +254,13 @@ class CI_DB_sqlite_driver extends CI_DB {
*/
protected function _list_tables($prefix_limit = FALSE)
{
- $sql = "SELECT name from sqlite_master WHERE type='table'";
+ $sql = "SELECT name FROM sqlite_master WHERE type='table'";
- if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+ if ($prefix_limit !== FALSE && $this->dbprefix != '')
{
- $sql .= " AND 'name' LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
+ return $sql." AND 'name' LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
}
+
return $sql;
}
@@ -343,7 +292,7 @@ class CI_DB_sqlite_driver extends CI_DB {
*/
protected function _field_data($table)
{
- return "SELECT * FROM ".$table." LIMIT 1";
+ return 'SELECT * FROM '.$this->escape_identifiers($table).' LIMIT 1';
}
// --------------------------------------------------------------------
@@ -366,27 +315,6 @@ class CI_DB_sqlite_driver extends CI_DB {
// --------------------------------------------------------------------
/**
- * From Tables
- *
- * This function implicitly groups FROM tables so there is no confusion
- * about operator precedence in harmony with SQL standards
- *
- * @param array
- * @return string
- */
- protected function _from_tables($tables)
- {
- if ( ! is_array($tables))
- {
- $tables = array($tables);
- }
-
- return '('.implode(', ', $tables).')';
- }
-
- // --------------------------------------------------------------------
-
- /**
* Replace statement
*
* Generates a platform-specific replace string from the supplied data
@@ -422,43 +350,16 @@ class CI_DB_sqlite_driver extends CI_DB {
// --------------------------------------------------------------------
/**
- * Limit string
- *
- * Generates a platform-specific LIMIT clause
- *
- * @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
- * @return string
- */
- protected function _limit($sql, $limit, $offset)
- {
- if ($offset == 0)
- {
- $offset = '';
- }
- else
- {
- $offset .= ", ";
- }
-
- return $sql."LIMIT ".$offset.$limit;
- }
-
- // --------------------------------------------------------------------
-
- /**
* Close DB Connection
*
- * @param resource
* @return void
*/
- protected function _close($conn_id)
+ protected function _close()
{
- @sqlite_close($conn_id);
+ @sqlite_close($this->conn_id);
}
}
/* End of file sqlite_driver.php */
-/* Location: ./system/database/drivers/sqlite/sqlite_driver.php */
+/* Location: ./system/database/drivers/sqlite/sqlite_driver.php */ \ No newline at end of file